Openshift, Openshift, how can your mysql be so slow?!

As everyone knows, this blog is on Openshift.
And, slow as you can see.
This is not normal: so I tried to fix it.
Cache, CDN, cut some part of the pages…..
nothing really helped.
I use pingdom to help me:
And, what it said is:
7 secs. for waiting for reply
2secs for load js, css etc. , which is reasonable.
So….WTF makes the waitting time sooooooooooooo long?
plugins? Rarely do I use them.
sidebars? I cut some of them, well, a little bit better, but still very slow.
CDN? But it is fast everywhere except on my blog…
DNS? Doesn’t make sense…
I think I won’t  know the answer until I put a line in my footer.php:

<?php echo get_num_queries(); ?> queries in <?php timer_stop(3); ?> seconds

And what I got is:
25 queries in 5.492 seconds
After I optimised my DB and deleted all the useless lines in it….
So, now I enabled a cache.
For the first time to open a page, it would be slow as usual ; then, much better in 30 min.
But hell the problem still exist….
To be continued….

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